/* ============================================
   Tracksy – tracksyfit.com
   Apple-Inspired Design System
   Light & Dark Mode
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,400&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ---------- Light tokens ---------- */
:root {
  --bg-page: #ffffff;
  --bg-section: #f5f5f7;
  --bg-card: #ffffff;
  --bg-card-hover: #fafafa;
  --bg-nav: rgba(255,255,255,0.72);
  --bg-nav-mobile: rgba(255,255,255,0.94);
  --bg-badge: rgba(74,127,247,0.08);
  --bg-toggle: #e8e8ed;

  --border-main: rgba(0,0,0,0.08);
  --border-card: rgba(0,0,0,0.06);
  --border-input: rgba(0,0,0,0.12);

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;

  --blue: #0071e3;
  --blue-hover: #0077ed;
  --blue-bg: rgba(0,113,227,0.06);
  --green: #34c759;
  --green-bg: rgba(52,199,89,0.08);
  --orange: #ff9500;
  --orange-bg: rgba(255,149,0,0.08);
  --purple: #af52de;
  --purple-bg: rgba(175,82,222,0.08);
  --red: #ff3b30;
  --red-bg: rgba(255,59,48,0.06);

  --gradient-hero: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 100%);
  --gradient-accent: linear-gradient(135deg, #0071e3, #5ac8fa);
  --gradient-premium: linear-gradient(135deg, #af52de 0%, #5e5ce6 100%);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --radius-pill: 980px;

  --max-w: 1080px;
  --max-w-sm: 740px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Dark tokens ---------- */
[data-theme="dark"] {
  --bg-page: #000000;
  --bg-section: #1c1c1e;
  --bg-card: #1c1c1e;
  --bg-card-hover: #2c2c2e;
  --bg-nav: rgba(0,0,0,0.72);
  --bg-nav-mobile: rgba(28,28,30,0.94);
  --bg-badge: rgba(10,132,255,0.12);
  --bg-toggle: #3a3a3c;

  --border-main: rgba(255,255,255,0.08);
  --border-card: rgba(255,255,255,0.06);
  --border-input: rgba(255,255,255,0.12);

  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;

  --blue: #0a84ff;
  --blue-hover: #409cff;
  --blue-bg: rgba(10,132,255,0.12);
  --green: #30d158;
  --green-bg: rgba(48,209,88,0.12);
  --orange: #ff9f0a;
  --orange-bg: rgba(255,159,10,0.12);
  --purple: #bf5af2;
  --purple-bg: rgba(191,90,242,0.12);
  --red: #ff453a;
  --red-bg: rgba(255,69,58,0.10);

  --gradient-hero: linear-gradient(180deg, #000 0%, #1c1c1e 100%);
  --gradient-accent: linear-gradient(135deg, #0a84ff, #5ac8fa);
  --gradient-premium: linear-gradient(135deg, #bf5af2 0%, #5e5ce6 100%);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.5);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s, color 0.3s;
}

a { color: var(--blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--blue-hover); }
img { max-width: 100%; height: auto; }

/* ---------- Utility ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container--sm { max-width: var(--max-w-sm); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section--alt { background: var(--bg-section); }

/* ---------- NAVIGATION ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 12px 0;
  background: var(--bg-nav);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--border-main);
  transition: background 0.4s;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; }
.nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Outfit', sans-serif; font-weight: 700;
  font-size: 1.3rem; color: var(--text-primary);
  letter-spacing: -0.02em;
}
.nav__logo:hover { color: var(--text-primary); }
.nav__logo-icon {
  width: 34px; height: 34px; border-radius: 8px;
  object-fit: contain;
}
.nav__links {
  display: flex; align-items: center; gap: 4px; list-style: none;
}
.nav__links a {
  color: var(--text-secondary); font-size: 0.82rem; font-weight: 500;
  padding: 7px 14px; border-radius: var(--radius-pill);
  transition: all 0.2s;
}
.nav__links a:hover { color: var(--text-primary); background: var(--blue-bg); }

.nav__right { display: flex; align-items: center; gap: 12px; }

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 24px; border-radius: 12px;
  background: var(--bg-toggle); border: none; cursor: pointer;
  position: relative; transition: background 0.3s;
  flex-shrink: 0;
}
.theme-toggle__dot {
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; position: absolute; top: 3px; left: 3px;
  transition: transform 0.3s var(--ease-spring);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.55rem;
}
[data-theme="dark"] .theme-toggle { background: var(--blue); }
[data-theme="dark"] .theme-toggle__dot { transform: translateX(16px); }

.nav__cta-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 18px; background: var(--blue); color: #fff !important;
  font-weight: 600; font-size: 0.82rem; border-radius: var(--radius-pill);
  transition: all 0.25s;
}
.nav__cta-btn:hover { background: var(--blue-hover); color: #fff !important; transform: translateY(-1px); }
.nav__cta-btn svg { width: 14px; height: 14px; }

.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav__hamburger span {
  display: block; width: 20px; height: 1.5px;
  background: var(--text-primary); border-radius: 1px;
  transition: all 0.2s;
}

/* ---------- HERO ---------- */
.hero {
  padding-top: 120px; padding-bottom: 80px;
  background: var(--gradient-hero);
  text-align: center;
  overflow: hidden;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 14px 5px 8px;
  background: var(--bg-badge); border: 1px solid var(--border-card);
  border-radius: var(--radius-pill); font-size: 0.75rem;
  font-weight: 600; color: var(--blue); margin-bottom: 24px;
}
.hero__badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue); animation: dot-pulse 2s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; } 50% { opacity: 0.3; }
}
.hero__title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800; line-height: 1.08;
  letter-spacing: -0.04em; margin-bottom: 18px;
  color: var(--text-primary);
}
.hero__title .accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 520px; margin: 0 auto 32px; line-height: 1.7;
}
.hero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; flex-wrap: wrap; margin-bottom: 56px;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'DM Sans', sans-serif; font-weight: 600;
  font-size: 0.95rem; border: none; cursor: pointer;
  border-radius: var(--radius-pill); transition: all 0.25s;
}
.btn--primary {
  padding: 14px 28px; background: var(--blue); color: #fff;
}
.btn--primary:hover { background: var(--blue-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,113,227,0.25); }
.btn--primary svg { width: 17px; height: 17px; }
.btn--secondary {
  padding: 14px 28px; background: transparent; color: var(--text-primary);
  border: 1.5px solid var(--border-input);
}
.btn--secondary:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-bg); }

/* Phone showcase – single centered phone with CSS device frame */
.hero__phone-showcase {
  display: flex; align-items: center; justify-content: center;
  position: relative;
  margin-top: 16px;
}
.hero__device-frame {
  position: relative;
  width: 280px;
  border-radius: 44px;
  overflow: hidden;
  background: #000;
  padding: 0;
  box-shadow:
    0 0 0 3px #1a1a1a,
    0 0 0 6px #333,
    0 24px 64px rgba(0,0,0,0.25),
    0 8px 20px rgba(0,0,0,0.15);
  transition: transform 0.6s var(--ease-spring), box-shadow 0.4s;
}
.hero__device-frame:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow:
    0 0 0 3px #1a1a1a,
    0 0 0 6px #333,
    0 32px 80px rgba(0,0,0,0.3),
    0 12px 28px rgba(0,0,0,0.2);
}
[data-theme="dark"] .hero__device-frame {
  box-shadow:
    0 0 0 3px #2a2a2a,
    0 0 0 6px #444,
    0 24px 64px rgba(0,0,0,0.5),
    0 8px 20px rgba(0,0,0,0.3);
}
[data-theme="dark"] .hero__device-frame:hover {
  box-shadow:
    0 0 0 3px #2a2a2a,
    0 0 0 6px #444,
    0 32px 80px rgba(0,0,0,0.6),
    0 12px 28px rgba(0,0,0,0.4);
}
.hero__mockup {
  display: block; width: 100%; height: auto;
  object-fit: cover;
}
/* Show light in light mode, dark in dark mode */
.hero__mockup--dark { display: none; }
[data-theme="dark"] .hero__mockup--light { display: none; }
[data-theme="dark"] .hero__mockup--dark { display: block; }

/* ---------- FEATURES ---------- */
.features__header { text-align: center; margin-bottom: 56px; }
.section__badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; background: var(--blue-bg);
  border: 1px solid var(--border-card); border-radius: var(--radius-pill);
  font-size: 0.72rem; font-weight: 600; color: var(--blue);
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 14px;
}
.section__title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800; letter-spacing: -0.03em;
  line-height: 1.12; margin-bottom: 12px;
}
.section__title .accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section__desc {
  font-size: 1rem; color: var(--text-secondary);
  max-width: 480px; margin: 0 auto; line-height: 1.7;
}

.features__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}

.feature-card {
  background: var(--bg-card); border: 1px solid var(--border-card);
  border-radius: var(--radius-lg); padding: 28px 24px;
  transition: all 0.3s var(--ease); position: relative; overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-lg);
  border-color: var(--border-input);
}

/* Premium card glow */
.feature-card--premium { border-color: rgba(175,82,222,0.2); }
.feature-card--premium::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(175,82,222,0.03), rgba(94,92,230,0.03));
  pointer-events: none;
}
[data-theme="dark"] .feature-card--premium::before {
  background: linear-gradient(135deg, rgba(175,82,222,0.06), rgba(94,92,230,0.06));
}

.feature-card__icon {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin-bottom: 16px;
}
.feature-card__title {
  font-family: 'Outfit', sans-serif; font-size: 1.05rem;
  font-weight: 700; margin-bottom: 6px;
}
.feature-card__desc {
  font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6;
  margin-bottom: 14px;
}
.feature-card__tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.03em;
}
.tag--free { background: var(--green-bg); color: var(--green); }
.tag--premium { background: var(--purple-bg); color: var(--purple); }

.icon--calories { background: var(--orange-bg); }
.icon--barcode { background: var(--blue-bg); }
.icon--ai { background: var(--purple-bg); }
.icon--supplements { background: var(--orange-bg); }
.icon--water { background: var(--blue-bg); }
.icon--analytics { background: var(--red-bg); }

/* ---------- PRICING ---------- */
.pricing__cards {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px; max-width: 780px; margin: 56px auto 0;
}
.plan {
  background: var(--bg-card); border: 1.5px solid var(--border-card);
  border-radius: var(--radius-xl); padding: 36px 28px;
  transition: all 0.3s var(--ease); position: relative;
}
.plan:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.plan--pro {
  border-color: var(--blue);
  background: var(--bg-card);
}
.plan--pro::before {
  content: 'RECOMMENDED';
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  padding: 4px 14px; background: var(--blue); color: #fff;
  font-size: 0.6rem; font-weight: 700; border-radius: var(--radius-pill);
  letter-spacing: 0.06em;
}

.plan__name { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.plan__price {
  font-family: 'Outfit', sans-serif; font-size: 2.8rem;
  font-weight: 800; margin-bottom: 4px;
}
.plan__price span { font-size: 0.9rem; font-weight: 400; color: var(--text-tertiary); }
.plan__period { font-size: 0.8rem; color: var(--text-tertiary); margin-bottom: 24px; }

.plan__list {
  list-style: none; display: flex; flex-direction: column;
  gap: 10px; margin-bottom: 28px;
}
.plan__list li {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.88rem; color: var(--text-secondary);
}
.plan__list .check { color: var(--green); font-weight: 700; }
.plan__list .cross { color: var(--text-tertiary); }

.plan__btn {
  display: block; width: 100%; padding: 13px;
  text-align: center; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 0.88rem; border: none;
  cursor: pointer; transition: all 0.25s;
}
.plan__btn--outline {
  background: transparent; border: 1.5px solid var(--border-input);
  color: var(--text-primary);
}
.plan__btn--outline:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-bg); }
.plan__btn--fill {
  background: var(--blue); color: #fff;
}
.plan__btn--fill:hover { background: var(--blue-hover); color: #fff; transform: translateY(-1px); }

/* ---------- CTA ---------- */
.cta { padding: 80px 0; }
.cta__box {
  background: var(--bg-section);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl); padding: 72px 48px;
  text-align: center; position: relative; overflow: hidden;
}
.cta__title {
  font-family: 'Outfit', sans-serif; font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800; margin-bottom: 12px;
}
.cta__desc {
  font-size: 1rem; color: var(--text-secondary);
  margin-bottom: 28px; max-width: 420px; margin-left: auto; margin-right: auto;
}

/* ---------- FOOTER ---------- */
.footer {
  padding: 48px 0 24px;
  border-top: 0.5px solid var(--border-main);
}
.footer__inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 40px; margin-bottom: 36px;
}
.footer__brand-desc {
  font-size: 0.85rem; color: var(--text-secondary);
  line-height: 1.7; margin-top: 10px; max-width: 280px;
}
.footer__heading {
  font-size: 0.7rem; font-weight: 600; color: var(--text-tertiary);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px;
}
.footer__links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer__links a { color: var(--text-secondary); font-size: 0.85rem; }
.footer__links a:hover { color: var(--blue); }
.footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 20px; border-top: 0.5px solid var(--border-main);
  font-size: 0.75rem; color: var(--text-tertiary);
}

/* ---------- LEGAL PAGES ---------- */
.legal-hero {
  padding: 140px 0 48px;
  background: var(--gradient-hero);
  text-align: center;
}
.legal-hero__title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800; letter-spacing: -0.02em; margin-bottom: 8px;
}
.legal-hero__date { font-size: 0.85rem; color: var(--text-tertiary); }

.legal-content {
  padding: 48px 0 100px;
}
.legal-content .container--sm {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 48px 48px;
}
.legal-content h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.2rem;
  font-weight: 700; margin-top: 36px; margin-bottom: 12px;
  color: var(--text-primary);
}
.legal-content h3 {
  font-family: 'Outfit', sans-serif; font-size: 1rem;
  font-weight: 600; margin-top: 24px; margin-bottom: 8px;
}
.legal-content p {
  font-size: 0.9rem; color: var(--text-secondary); line-height: 1.8;
  margin-bottom: 12px;
}
.legal-content ul, .legal-content ol {
  margin-bottom: 12px; padding-left: 20px;
}
.legal-content li {
  font-size: 0.9rem; color: var(--text-secondary); line-height: 1.8;
  margin-bottom: 4px;
}
.legal-content strong { color: var(--text-primary); font-weight: 600; }
.legal-content a {
  color: var(--blue); text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- ANIMATIONS ---------- */
.fade-in {
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .hero__device-frame { width: 240px; }
}

@media (max-width: 768px) {
  .hero { padding-top: 100px; padding-bottom: 56px; }
  .hero__device-frame { width: 220px; }

  .section { padding: 72px 0; }

  .features__grid { grid-template-columns: 1fr; gap: 12px; }

  .pricing__cards { grid-template-columns: 1fr; max-width: 400px; }

  .cta__box { padding: 48px 24px; }

  .footer__inner { grid-template-columns: 1fr; gap: 24px; }
  .footer__bottom { flex-direction: column; gap: 10px; text-align: center; }

  /* Mobile nav */
  .nav__links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--bg-nav-mobile);
    backdrop-filter: blur(24px); padding: 12px 24px; gap: 2px;
    border-bottom: 0.5px solid var(--border-main);
    box-shadow: var(--shadow-md);
  }
  .nav__links.open { display: flex; }
  .nav__links a { padding: 10px 14px; font-size: 0.92rem; }
  .nav__hamburger { display: flex; }

  .hero__actions { flex-direction: column; gap: 10px; }
  .btn--primary, .btn--secondary { width: 100%; max-width: 280px; justify-content: center; }

  .legal-content .container--sm { padding: 32px 24px; }
}

@media (max-width: 480px) {
  .plan { padding: 28px 20px; }
  .container, .container--sm { padding: 0 16px; }
}